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SCHXGN15-12 type Air Insulated Ring Main Unit
SCHXGN15-12 type Air Insulated Ring Main Unit
SCHXGN15-12 type Air Insulated Ring Main Unit

Description:

SCHXGN15-12 type Air Insulated Ring Main Unit switchgear (Air Cabinet for short) is a metal-enclosed switchgear which uses FZN25-12 air-insulated vacuum load switch as the main switch. The whole cabinet is air-insulated, compact and expandable. The air cabinet can be combined freely according to different purposes to meet the requirements of end users or network nodes. At the same time, It can meet the needs of various power distribution openers, box substations, cable branch boxes. It’s Widely used in industrial and civil power ring networks and power supply terminals.

Features:

u High insulation and good environmental protection.

u Constant pressure, particularly suitable for high altitude areas. Stronger environmental adaptability than SF6 Gas Ring Main Cabinet without special design.

u Smaller size than traditional Ring Main Cabinet of the same voltage level. Compact and convenient for on-site assembly.

u Complete mechanical interlock function, fully meeting interlocking protection requirements.

u Compact size, easy to install and easy to operate with expandable modular combination. Choosing the best wiring scheme according to customer needs.

u Side or side expansion depending on the installation location.

u Configuring electric, remote control and monitoring devices with simulating the different needs of users.

u Complete and reliable Five-protection system.

Using environment:

u Temperature: Min -25℃~Max+40℃;

u Relative humidity: Daily average ≦95%; Monthly average≦90%;

u Altitude: ≦3000m;

u Shock level: Horizontal acceleration 0.4m/s2,Vertical acceleration 0.15m/s2;

u Installation location: The place with no severe impact, serious pollution and chemical corrosion, no conductive dust and explosion risk.

When the conditions of use exceed the above range, the user shall negotiate with us to determine the allowable range or take corresponding supplementary technical measures.

 

 

Technical Parameters:

Item

unit

Load switch

Composite apparatus

Circuit breaker

Rated voltage

KV

12

12

12

Rated frequency

Hz

50/60

50/60

50/60

Rated current

A

 

 

 

Main bus

A

630

630

630

Branch bus

A

630

125(Depending on the rated current of the fuser)

630

Rated insulation level

KV

 

 

 

Power frequency withstand voltage (Phase to phase, Phase to ground)

KV

40

42

42

Power frequency withstand voltage(Fracture)

KV

48

48

48

Power frequency(Control and auxiliary circuit)

KV

2

2

2

Lightning impulse withstand voltage(Phase to phase, Phase to ground)

KV

75

75

75

Lightning impulse withstand voltage(Fracture))

KV

85

85

85

Rated short-time withstand current(r.m.s)

KA

 

 

 

Main circuit

KA

20/3s

-

25/2s

Ground loop

KA

20/25

-

25/2s

Stable peak withstand current

KA

50

-

63

Rated short-circuit closing current(peak)

KA

50

80

63

Rated short-circuit breaking current

KA

-

31.5

25

Rated take-over current

A

-

1700

-

 Rated active load breaking current

A

630

-

-

Rated closed-loop breaking current

A

630

-

630

Rated cable-charging breaking current

A

10

-

15

IP grade

 

IP3X

IP3X

IP3X

Mechanical life

Time

 

 

 

Load switch

 

5000

5000

10000

Grounding switch

 

3000

3000

3000


Product details
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